Apparatus for magnetically separating materials.



s. BRUCE.

APARATUS POR MAGNETGALLY SBPARATlNG MATERIALS.

APPLICATION FILED MAY17,1911.

@my i mente@ man 18, 1913.

-flressed must traverse a y invention relates to apnaratus *for niabnetically separating linerained inagnetic and non-magnetic materials or highly and` slightly magnetic materials.

My invention which utilizes the attractive force or' a magnetic lelfl not only sach; but equally inales use ot' the lynainic nature mi: the saine, substantially chillV c troni known processes the following; respects: ln known devices the material to he tlre o is passcf'l through a magnetic elcl which, with regard to the direction in which the material is to we moreel, gradually increases in strength and becomes ivealier. li a certain place it has a maximum strength oil lielcl antl exercises its greatest attractive force at one deli` nite place; that is to say the material to he 'fairly sharply marlecl Zone of separation. rlfhe magnetic separation proper olthe material therefore occurs comparatively very raniflly. (lense-- quently. on the one hand tliosi magnetic `parts of the material to be dre tl @.vhich are nearest the ielcl are very rapidly attracted and carry along with them a quantity of non-magnetic parts. On the other haiul, the magnetic parts more reinovetl from the .tlehl cannot arrive in Clue time Wilhin s ich range of the field that they are f "ac l magnet. Again, the attracted G displacement ot a magnetic hotly troni. magnetic ielfl of great intensitv into one of less intensity requires a ce I oueecl, whereby iurtl traversed bythe material.

i? e?? BERLIN, Genemans.

en. serial ne. esee.

material lhe disadvantage of this clevice ies in the. tact that, as a rule, segara'tion altes place on the inlet point only7 and even l i :ily on the outer layer of the material no loosen the nia 'al lon r parts are magneti- .lineal in theirrelative position with respect to the magnet, so that the entire charge While sliding downward `vvvill retain the position r'lzted at the moment ot' entrance, ln fact, the density of the material is increased by the steadily growing weight of the ore during its downward slide ano thus the non-magnetic parts are entirely deprived ot' the influence ot the separating force.

l Il

The present invention proposes to remove these .,saelvantages. 'l`o tn s end7 the ina-- terial is passed through aconstant magnetic lield ot' uniform strength in the longitudinal direction by means ot' an external force, such as Water, compressed air -and the like', in such manner that the separating forces are etleclive liroughoirt the entire dist-ance lf the material is conveyed past `the magnet by water or compresse/l air the single particles will not he densely positioned. on the contrary, they can freely [nove on their entire path and are atall times subjected to the unobstructed inlluenceI oi: the separatingl forces. To this must he added the fact that the. separation is as in all preparations considerably augmented through the action of the Water or the aircurrent.

'lwo lorms ot' apparatus are represented hy way of example in the accompanying drawing, wherein:h

Figures l antl 2 are vertical sections showing two forms o" apparatus. Figs. 3 and are plan .'iewg7 of Figs. l and Q respectively.

Referring o Figs. l and 8, the electron'iagnet, which comprises an iron core e and a win line' s and 'whose field is directed outv: rtl, runs in spiral turns z' round the inner wall ot a cylindrical ves sel a coaxially inountec rlhe material lo he dressed is spirally supplietl in anyv rsuitable manier, c. y. hy the being langentially nt-reduced from ahore into the chamber or space, .7c between the two cylinders by a pijie r so that. the i 'reci' ion ot the material iv'lich is being sup y led nearly as possile coincides with the direction of the mageric winding. The

in a second cylindrical vessel ).A

iirtrolusozl material obtains a rolzatoryy mo- 1 'lion from which i spiral motion resuls orario@ tho downwardly directed channel.

im. 'the operation. off 'the device, 'lle nonmziglieic ports are driven by the Cenrifugsil force, due lo the rotary motion against die of die outer Vessel and are conducted downwardly along the sume, While the magiiotio urto are conducted downwardly along il of die inner resse The separated morial colleoled in two suitably arml, cofixial funnel@ or hoppers, 42h@ magic miiorizil pasSiiig into the hopper t1 mid lili@ noirmagnotic material ino the hopzond conducted a separately.

rringg o Figs. 2 and al, the rlectrf 3, Whose :Field is directed inward is Wouri .fipirolly about the outside Wall of :i ojylinrlriczil Vessel c. The spiral moion of the maeriol. lo be dressed is here also oloined by suilnbly supplying the material rleoorilml wifh reference to Fig. l. Ow olh@ loriimrioii'olI @oldies (lue to lha rial being fed in angentially by a pipe lo llaa wss/l in circles which conbecome smallor and are conduclecl '2W lirougi lle hopper t3, While the mag- ""ris or@ guided along the Wall of the l parallel ro ille magiioic force to lie limp-per l oo lion-magnetic paris travel toward the 1 erial lo lio fli l l i l r l l l I l l Loooro lai orfler lo lorials which for-Ges lily lili@ succession, one of rv Y i3 lirougli o serias of oppazituses the lieromdescrlbod form *rho individual apparauses .To to various dogreos in orolor lirst lio sep w 'the moro nmgiieic aiicl Subsequeir :y lli mognolic ii'iatormls.

claim ln an oloc'tromagiioio separator iii Comomaion: 1 cylindrical V955@ i) lid spiral e @ciro-magnet @landing domiwarllif .5'

lll/iliiessos:

lllorommiz mr'r, HENRY 

